This formation is called Cathedral Spires which is located in the Custer State Park in the Black Hills of South Dakota. To get to this location you must travel the Needles Highway which has low Narrow Tunnels that had widths of about 9 feet and Height of 12 feet. This road is nice to drive because you have no large Motor Homes or large trailers to deal with. A lot of Motor Bikes doing back country scenic travel.